Induction-current generator.



. M. FISCHER.

INDUCTION CURRENT GENERATOR.

APPLICATION FILED NOV, 20,1903.

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PATENTED AUG. 4, 1908.

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UNITED STATES PTENT orrrca.

MARTIN FISCHER, OF ZURICH, SWITZERLAND, ASSIGNOR TO THE FlltM OF AUTIENGESELL SCHAFT fMAGNETA" (ELEGTRISCHE UHREN OHNE BATTERIE & OHNE ()(JNTAOTELOF ZURICH, SWITZERLAND.

INDUCTION-CURRENT GENERATOR.

, No. 894,944.. Specification of Letters Patent.

I Patented Aug. 1908. Application tiled. November 20, 1903. Serial No. 181,976.

To all whom it may concern: ably,

Be .it known that I, MARTIN .Frsonnma ole citizen of the Republicof Switzerland, residing at Zurich, in Switzerland, have invented a'new and useful Improvement in Induction-Current Generatols, of which the close proximity to the corresponding faces of following is a specification. the

My invention has relation to that type of the 'eld magnet pole induction current generator in which the induction coil and magnetic. field are both stationary, while the magnetic conductor or pole changer is ca able-of oscillation in the magnetic field, and is so positioned relatively to the poles of a permanent field magnet that spectively, circle having also for center the axis of oscillation of the pole changer,

extensions m.

The pole pieces e and e are connected by bars f, which latter are mounted on the aforementioned cone screws g in the bridges The lower pole piece e of the pole changer has adownward extension or arm t, 'to which is pivoted a rod '11. reciprocated by reversal of its position will produce reversal any suitable motor, either conti uously or of polarity, and change in the direction of periodically, according to the uses made of the lines of force passing through the coil. the generator. ."It is .obvious that each re- The characteristic feature of my invention versal of the position of thearmature will lies in the relative arrangement of the induc- I produce a reversal of clarity, or change in tion coil and pole changer, whereby the area the direction of the ines of force passing of its poles may be given any desired extent through the coil. relatively to the induction coil and field mag- The described induced net poles, with a'view to the utmost utiliza may be ap lied to various uses, as, fornition of the induction action. But that my stance, to e ectrically operate an indicator of invention may be fully understood, I wi any kind, or to operate secondary clocks in a now describe the same in detail, reference system-of time indicators, in which case the being had to the accompanying drawings, generator is operated by the master clock at in which suitable interyals of time, or by a driving Figure 1 is a vertical sectional view on line A-A of Fig. 2, which latter is a vertical section on line B'B of Fig. 1,'and Fig. 3 is a horizontal section on line 0+0 of said Fig. 1, of an induction current generator embodying my invention.

Similar letters'of reference indicate like iparts wherever such may occur in the several gu-res of drawings, wherein current generator I am thus enabled to inc ude a number of indicating devices in a permanently closed or 'well understood, and by the described construction I am also enabled to reduce the amplitude ofthe vibrations of the pole changer to a minimum, while comparatively a cylindrical bar 0 having at each end a piece or shoe, indicated by eand e re' whose outer faces are arcs of av ole shoes n s and n s, respectively, of

,loop circuit and dispense with electric con-- tact devices, the disadvantages of which are a and vibrate in mechanism controlled b the master clock.

m indicates the permanent or field horselittle power is required to vibrate said pole shoe magnet, having pole extensions in the changer.

form of rectangular plates m provided inter- Having thus described my invention, what mediate their upper and lower edges withl I claim as new therein and esire to secure by two pairs of pole shoes, n s,'and n s,.whose q Letters Patent, is proximate faces are arcs of a. circle having for center the axis of rotation of a magnetic conductor or pole changer.

To the pole extensions 1%" are secured bridges-or plates p, having diametrically disposed internally threaded screw bearings for cone screws g on which the pole changer is mounted to. vibrate, and between the two airs of field magnet poles n s and n.s -is coated the stationary induction coil which surrounds the pole changer.

The pole changer is composed of, prefertween the ends of the coil.

the ends of the coil,

plates taking into said means at points he 2. A magnvtic ind hlnat-wn a 1101' pairs of pol at their end s 5 fiully close :fiveen the pol s parallel to platcsm (:0

uctor comprising in c0mscsh0e magnet having two nnccting the poles thcreby forming a substanchamber, a es in said 111g an OPOIHUg therethrou opening thro 1'0 extensions over the ends of ugh coil nioun ted bechaniber Whose axis the magnet and havgh, a core smaller the 0011, having the coilbetween the coil and of th poies, bars f connecting the ends,

cificationin th Witnesses.

and pivots 0 the bars. whereof I have signed my g passing 8 presence of 15 MARTIN FISCHER.

Witnesses:

JAKOB 0. BRUNNER, 

